CVE-2025-59245 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-502** (Deserialization of Untrusted Data). ⚠️ **Flaw**: The platform processes untrusted data insecurely, allowing attackers to manipulate internal states or execute malicious logic.

Q: Who is affected? (Versions/Components)

🏢 **Affected**: **Microsoft SharePoint Online**. 📅 **Vendor**: Microsoft. 📝 **Note**: Specific version numbers are not listed in the advisory, but the cloud service is impacted.

Q: Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **LOW**. 🌐 **Auth**: **None Required** (PR:N). 🖱️ **UI**: **None Required** (UI:N). 📡 **Network**: **Network** accessible (AV:N). 🎯 **Complexity**: **Low** (AC:L).

Q: Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exploit**: **No**. 📄 **PoCs**: None listed in the data. 🌍 **Wild Exploitation**: Currently unknown/unconfirmed.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. ⚡ **Priority**: **Immediate Action Required**. 📉 **Risk**: High exploitability (No auth, Low complexity) + High Impact (Full compromise). Patch now!

Updated May 06, 2026 CVSS 9.8 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Microsoft SharePoint suffers from a **Code Issue** leading to **Elevation of Privilege**. <br>💥 **Consequences**: Attackers can gain full control.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-502** (Deserialization of Untrusted Data). <br>⚠️ **Flaw**: The platform processes untrusted data insecurely, allowing attackers to manipulate internal states or execute malicious logic.

Q3Who is affected? (Versions/Components)

🏢 **Affected**: **Microsoft SharePoint Online**. <br>📅 **Vendor**: Microsoft. <br>📝 **Note**: Specific version numbers are not listed in the advisory, but the cloud service is impacted.

Q4What can hackers do? (Privileges/Data)

👑 **Privileges**: Attackers can **Elevate Privileges**. <br>📂 **Data**: Full access to sensitive business information, user data, and collaboration workflows.…

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Q5Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: **LOW**. <br>🌐 **Auth**: **None Required** (PR:N). <br>🖱️ **UI**: **None Required** (UI:N). <br>📡 **Network**: **Network** accessible (AV:N). <br>🎯 **Complexity**: **Low** (AC:L).

Q6Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exploit**: **No**. <br>📄 **PoCs**: None listed in the data. <br>🌍 **Wild Exploitation**: Currently unknown/unconfirmed.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Scan for **SharePoint Online** instances. <br>📊 **Monitoring**: Look for unusual privilege changes or unexpected code execution in SharePoint logs.…

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Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **Yes**. <br>📥 **Patch**: Microsoft has released an update.…

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Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: Since it is a cloud service (SharePoint Online), **automatic updates** usually apply. <br>👀 **Action**: Ensure your tenant is up-to-date.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **CRITICAL**. <br>⚡ **Priority**: **Immediate Action Required**. <br>📉 **Risk**: High exploitability (No auth, Low complexity) + High Impact (Full compromise). Patch now!

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Vulnerability detail Full AI analysis (login) Microsoft CWE-502